Automatic cut-off for gas-burners.



H. S. LEINSS.

AUTOMATIC GUT-OFF FOR GAS BURNERS.

APPLICATION FILED APILZZ, 1913.

1,098,670, Patented Julie 2,1914.

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0 15 IN lil "W O 1i N r JHTTOJMUMEIG GUT-OFF GAS-JBURNERS.

neeaeva Specification of Letters Patent.

Patented June 2, idl r.

Application filed April 22, 1913. Serial No. 782,896.

To all whom it may concern:

Be it known that l, lint-mart S. lLnrNss, a citizen of the UnitedStates, residing at New Yorln in the county ot New York and State of New"lf ork have invented certain ne and useful ln'iprow'ements in AutomaticCut-Otis for Gas-l iiurners, of which the following is a specificationMy invention relates to a new and improved cut-oil :for burners and moreparticularly to a: cut-o t? which will be automatic in its action, andthe object of my invention is to provide a burner bracket with a cutoffvalve so arranged that it can be manually opened to permit the passageof gas to the burner and further so arranged that if for any reasons theflow of gas through the bracket to the burner is momentarily interruptedthe valve will be automatically closed and locked to prevent escape ofgas when the gas again begins to flow.

A further object of my invention is to provide a cut-off valve of theabove-described character which will be entirely independent oi theordinary cut-oil valve or turn-cock now in use and which will be locatedbetween said turn cock and the burner.

With these and other objects in view, my invention will be more fullydescribed, illus-' trated in the accompanying drawings and thenspecifically pointed out in the claims which are attached to and form apart of this application.

In the drawings: Figure 1 is a side elevation of a conventional form ofgas burner bracket showing my automatic cut-cit valve applied the etc;Fig. 2 is a vertical, central, longitudinal sectional view of a portionof the body of the burner tube showing the de tails of construction ofthe cut-oil valve; Fig. 3 is a transverse sectional view on the line 33oi Fig. 2.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the accompanying drawingsby the same reference characters.

in order to insure a full and clear understanding oi my improved cut-oilvalve and its operation, I have illustrated the same in connection witha conventional form of wall bracket 10 the body or pipe 11 of which isprovided at that end adjacent the wall with a cut-cit valve 12 of theusual turn-cock type and at its opposite end with lmirner it oi? anypreterred type having burner tip 14. The automatic cut-otl valve,designated. as a whole by the numeral 15, is located at a point betweenthe valve 12 and the burner, preferably near the valve 12.

Referring more specifically to Figs. 2 and 3 01" the drawing; it will beseen thatin order to provide a valve seat for the automatic cutotl valvel have termed the body or pipe ll of the bracket intcriorly, with anupwardly and outwardly diagonally extending web 16 which entirely closesthe tube save for a reduced gas passage 17, which is further reduced bya relatively short downwardly and :lorwardly extending web 18. The valveproper consists of a metallic disk 19 of relatively light metalswingingly mounted at its upper edge upon a pivot pin 20 and adapted tofall by gravity to close the opening 17 and to be opened by pressure ofthe gas in the tube to the position shown in dotted lines in Fig. 2.

In connection with this valve 1 have pro vided a locking deviceincluding a lever 21 pivoted intermediate its length upon a pin 29passed transversely oi? the bracket tube and having an upwardly andforwardly di rected arm 93 terminating in a rearwardly directed lockinglinger 24-. This finger is adapted to engage against the forward faceoff the valve disk 19 and hold the same in locked position and isnormally held in such position by the opposite arm of the lever 21 whichextends in parallel spaced relation to the bottom of the bracket tubeand is preferably coiniter-weighted sulliciently to hold the lever inplace.

As clearly shown in the drawing, the locking finger 24:: of the lever isso formed with respect to the lever that upward swinging of the arm 25will. move the same out oi the path of the valve disk and permit thevalve to open under the pressure of the gas. As soon as the lever istree the counterweightcd arm 25 thereof will cause it to swing back tobring its locking finger into engagement with the web 16. it now, forany reason, the stops flowing through the tube the valve disk 19 willswing downwardly by gravity, striking against the locking finger 24. toswing the lever out of en gagement with the web 16 to permit the closingof the valve. [is soon as the valve has been closed, the lever willautomatically swing back to the position shown in Fig. 2 to lock thevalve agains; upon renewed :tlow of the gas the tube In order to providemeans for manually opening the cut-off valve the tube immediately belowthe free end of the lever arm 25 is perforated as at 26 for the passageof a spring-pressed pin 27 provided at its outer end with a head 28, thespring 29 engaging in a bearing between the head of the pin and a washer30 surrounding the opening 26. The pin is provided interiorly of thetube with a collar 81 of rubber or other suitable material which, undernormal conditions, is held by the spring in close engagement against theinner face of the tube to prevent leakage through the perforation 26thereof. The pin and spring are protected from injury by a flaredconical sleeve or housing 32. p

In operation the gas is turned on in the usual manner by opening thevalve 12 and the pin 29 is then forced inwardly to swing the lockinglever out of engagement with the valve 19 and permit the pressure of gasthrough the tube to swing said valve to open position, in which positionit will be held as long as gas continues to flow through to the burner.If, for any reason, the flow of gas to the burner is interrupted, as bya momentary cutting off of the gas in the mains, or for any otherreason, the valve will fall by gravity and be locked in closed positionin the manner previously described. Presuming that the gas again beginsto flow, it will be apparent that it cannot pass through the closed andlocked valve 19 and therefore cannot escape through the burner ti In theforegoing description it will be apparent that I have provided aneffective form of automatic cut-01f valve and one with which burners maybe left burning without watching with impunity. It will of course beunderstood that I do not wish to limit myself to the specific details ofconstruction illustrated in the drawing as certain minor changes, withinthe scope of the appended claims, may be made at any time withoutdeparting from the spirit of my invention.

What I claim is:

1. In automatic cut-ofis for gas burners, a burner tube having a reducedpassage, a valve mounted to swing by gravity to close the passage and bypressure of gas to open the same, and a lever swingingly mounted in thetube and having a rearwardly directed upper end over which the valveswings in closing and which in turn swings to engage the valve whenclosed to lock the same in position.

2. In automatic cut-offs for gas burners, a burner tube having a reducedpassage, a valve mounted to swing by gravity to close the passage and bypressure of gas to open the same, a counter-weighted lever swinginglymounted in the tube and having a rearwardly directed upper end overwhich the valve swings in closing and which in turn swings to engage thevalve when closed to lock the same in position, and eXteriorly operablemeans for manually releasing the valve.

3. In automatic cut-offs for gas-burners, a burner tube having a reducedpassage, a valve mounted to swing by gravity to close the passage and bypressure of gas to open the same, and means for locking the valve inclosed position, said means including a counter-weighted leverswingingly mounted in the tube and having a normally horizontallydisposed rear arm and an upwardly and forwardly directed forward arm,and a rearwardly directed arm formed on the upper end of the forwardarm, said valve being adapted in closing to swing over the rearwardlydirected arm, which in turn swings back to engage the valve when closedto lock the valve in closed position.

4. In automatic cut-ofis for gas burners, a burner tube having a reducedpassage, a valve mounted to swing by gravity to close the passage and bypressure of gas through the tube to open thepassage, and means pivotedwithin the tube and rearwardly of the valve and engageable with thevalve for locking the valve in closed position.

5. In automatic out-ofls for gas burners, a burner tube having a reducedpassage, a valve mounted to swing by gravity to close the passage and bypressure of gas through the tube to open the passage, and means pivotedrearwardly of the valve and engageable therewith for locking the valvein closed position, said means being adapted to be moved intoinoperative position by the valve as this latter member swings intoclosed position, and to resume its normal locked position as soon as thevalve swings back to a complete closed position.

6. In automatic cut-offs for gas burners, a burner tube having a reducedpassage, a valve mounted to swing by gravity to close the passage and bypressure of gas to open the passage, and means for locking the valve inclosed position, said means including a lever pivoted in the tube at apoint in the rear of the valve and having a normally horizontallydisposed rear arm and an upward and forwardly directed forward arm,

and a rearwardly directed arm formed on the upper end of the forwardarm, said valve being adapted in closing to swing over the rearwardlydirected arm, which in turn swings back to engage the valve when closedto lock the valve in closed position.

7. In automatic cut-offs for gas burners, a burner tube having a reducedpassage, a valve mounted to swing by gravity to close the passage and bypressure of gas through the tube to open the passage, and means pivotedwithin the tube and rearwardly of the valve for looking the valve inclosed position, said means being moved into inoperative position uponthe movement of the valve into closed position and being adapted toautomatically resume its normal locked position as soon as the valvereaches a completely closed position, said means being engageable Withthe passage closing portion of the valve.

8. In automatic cut-offs for gas burners, a burner tube having a reducedpassage, a valve mounted to swing by gravity to close the passage and bypressure of gas through the tube to open the passage, a counterwveightedlever swingingly mounted in the tube With its pivotal point disposedrearvvardly of the valve, a rearwardly directed upper arm formed on thelever, said upper arm being moved into inoperative position during themovement of the valve into closed position, said upper arm being adaptedto swing back into normal locking engagement with the valve as soon asthe valve has reached a complete closed position.

9. In automatic cut-offs for gas burners, a burner tube having a reducedpassage, a valve mounted to swing by gravity to close the passage and bypressure of gas through the tube to open the passage, and means pivotedWithin the tube rearwardly of the valve for locking the valve in closedposition by engaging the passage closing portion of the valve.

In testimony whereof I afi'ix my signature in presence of tWo Witnesses.

HERMAN S. LEINSS. [11. s.] lVitnesses:

TI-Ios. P. LANE, JAMES G. LESLIE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

